An electric current flows directly from cell to cell through gap junctions at electrical synapses. The synapses are mostly chemical synapses that are involved in the release of neurotransmitters. The neurotransmitters are stored in synaptic vesicles in synaptic terminals.

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Answer 1

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Chapter 48, Problem 6IQ

a.

Summary Introduction

Introduction: An electric current flows directly from cell to cell through gap junctions at electrical synapses. The synapses are mostly chemical synapses that are involved in the release of neurotransmitters. The neurotransmitters are stored in synaptic vesicles in synaptic terminals.

b.

Summary Introduction

Introduction: The neurotransmitters bind to a receptor on a ligand-gated ion channel in the postsynaptic cell membrane. This binding will permit the ions to cross the membrane and thus, a graded postsynaptic potential is generated.

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Mark the following statements as true or false. If a statement if false, correct it to make a true statement. a. An excitatory postsynaptic potential is caused by K+ or Clchannels opening in the membrane of the postsynaptic neuron. b. Postsynaptic potentials may summate by spatial summation in which multiple neurons fire onto a single postsynaptic neuron. c. An inhibitory postsynaptic potential causes the membrane potential of the postsynaptic neuron to approach threshold. d. Spatial summation can combine two EPSPs, two IPSPs, or an EPSP and an IPSP

a)Explain how the presynaptic cell "knows" when to release its neurotransmitter into the synaptic cleft. b)Explain the difference between excitatory and inhibitory neurotransmitters in regards to their effect on the postsynaptic cell.

which one of the following statements is incorrect? a. temporal summation occurs when a single synaptic input is activated twice in succession, with the second postsynaptic potential occurring before the first postsynaptic potential is over. b. blocking voltage-gated k* channels in the presynaptic membrane of a typical chemical synapse is likely to reduce the amount of neurotransmitter released in response to a single action potential in the presynaptic axon. c. in the optic tectum of the hunting rattlesnake, spatial summation is used to combine inputs from visual and thermoreceptive layers in order to make a decision whether to strike at a mouse-like object. d. a single type of neurotransmitter can have different postsynaptic actions depending on the type of receptor to which it binds.

Answer 2

Question

Chapter 48, Problem 6IQ

a.

Summary Introduction

Introduction: An electric current flows directly from cell to cell through gap junctions at electrical synapses. The synapses are mostly chemical synapses that are involved in the release of neurotransmitters. The neurotransmitters are stored in synaptic vesicles in synaptic terminals.

b.

Summary Introduction

Introduction: The neurotransmitters bind to a receptor on a ligand-gated ion channel in the postsynaptic cell membrane. This binding will permit the ions to cross the membrane and thus, a graded postsynaptic potential is generated.

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Answer 3

Question

Chapter 48, Problem 6IQ

a.

Summary Introduction

Introduction: An electric current flows directly from cell to cell through gap junctions at electrical synapses. The synapses are mostly chemical synapses that are involved in the release of neurotransmitters. The neurotransmitters are stored in synaptic vesicles in synaptic terminals.

b.

Summary Introduction

Introduction: The neurotransmitters bind to a receptor on a ligand-gated ion channel in the postsynaptic cell membrane. This binding will permit the ions to cross the membrane and thus, a graded postsynaptic potential is generated.

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Answer 4

Question

Chapter 48, Problem 6IQ

a.

Summary Introduction

Introduction: An electric current flows directly from cell to cell through gap junctions at electrical synapses. The synapses are mostly chemical synapses that are involved in the release of neurotransmitters. The neurotransmitters are stored in synaptic vesicles in synaptic terminals.

b.

Summary Introduction

Introduction: The neurotransmitters bind to a receptor on a ligand-gated ion channel in the postsynaptic cell membrane. This binding will permit the ions to cross the membrane and thus, a graded postsynaptic potential is generated.

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Answer 5

Chapter 48, Problem 6IQ

a.

Summary Introduction

Introduction: An electric current flows directly from cell to cell through gap junctions at electrical synapses. The synapses are mostly chemical synapses that are involved in the release of neurotransmitters. The neurotransmitters are stored in synaptic vesicles in synaptic terminals.

b.

Summary Introduction

Introduction: The neurotransmitters bind to a receptor on a ligand-gated ion channel in the postsynaptic cell membrane. This binding will permit the ions to cross the membrane and thus, a graded postsynaptic potential is generated.

Answer 6

Chapter 48, Problem 6IQ

a.

Summary Introduction

Introduction: An electric current flows directly from cell to cell through gap junctions at electrical synapses. The synapses are mostly chemical synapses that are involved in the release of neurotransmitters. The neurotransmitters are stored in synaptic vesicles in synaptic terminals.

Answer 7

Chapter 48, Problem 6IQ

a.

Summary Introduction

Introduction: An electric current flows directly from cell to cell through gap junctions at electrical synapses. The synapses are mostly chemical synapses that are involved in the release of neurotransmitters. The neurotransmitters are stored in synaptic vesicles in synaptic terminals.

Answer 8

b.

Summary Introduction

Introduction: The neurotransmitters bind to a receptor on a ligand-gated ion channel in the postsynaptic cell membrane. This binding will permit the ions to cross the membrane and thus, a graded postsynaptic potential is generated.

Answer 9

b.

Summary Introduction

Introduction: The neurotransmitters bind to a receptor on a ligand-gated ion channel in the postsynaptic cell membrane. This binding will permit the ions to cross the membrane and thus, a graded postsynaptic potential is generated.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 48 - Prob. 1IQ Ch. 48 - a. What is the principal cation inside the cell?...Ch. 48 - The following diagram shows the changes in...Ch. 48 - Prob. 4IQ Ch. 48 - Prob. 5IQ Ch. 48 - Prob. 6IQ Ch. 48 - Prob. 7IQ Ch. 48 - Develop a flowchart or diagram or write a...Ch. 48 - Prob. 1TYK Ch. 48 - Prob. 2TYK

An electric current flows directly from cell to cell through gap junctions at electrical synapses. The synapses are mostly chemical synapses that are involved in the release of neurotransmitters. The neurotransmitters are stored in synaptic vesicles in synaptic terminals.

Solution Summary: The author explains that an electric current flows directly from cell to cell through gap junctions at electrical synapses. Temporal summation occurs when the neurotransmitters are released repeatedly from a synaptic terminal.

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Introduction: An electric current flows directly from cell to cell through gap junctions at electrical synapses. The synapses are mostly chemical synapses that are involved in the release of neurotransmitters. The neurotransmitters are stored in synaptic vesicles in synaptic terminals.

Introduction: The neurotransmitters bind to a receptor on a ligand-gated ion channel in the postsynaptic cell membrane. This binding will permit the ions to cross the membrane and thus, a graded postsynaptic potential is generated.

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